Fluid mixing device



Mami; g. D. P. HAMLET FLUID MIXING' DEVICE Filed Aug. 2, 1945 2 Sheets-Sheet l Mwah s w43 D. P. HAMLET 2943776@ lFLUID MIXING DEVICE Filed Aug. 2, 1945 2 Sheets-Sheet 2 Patented Mar.. 9,1948

ELU@ MIXING DEVICE f Darrel F. Hamlet, Chicago, Ill., assgnor to Continental Coffee Company, Chicago, Ill., a corporation of Illinois Application August 2, 1945, Serial No. 608,437

(Cl. Sil-290) 1 Claim. l

My invention relates to a device for mixing fluids of varying characteristics to obtain a resultant uniform nuid.

Among the objects of my invention is to provide a device adapted to receive liquids of varying strengths, and to delay the passing of the stronger fluids and expedite the passing of the weaker fluids so that desired larger amounts of weaker fluids may mix with lesser quantities of stronger iiuids for providing a resultant fluid of substantially uniform strength; to create a device constructed with openings of desired size and position to receive and pass fluids so as to mix the same; to eliminate the need of complicated shakers, agitators and stirring devices; to supply a mixer economical of manufacture, efficient in operation and lasting in use and such other objects, advantages and capabilities as will later more fully appear and which are inherently possessed by my invention.

While I have shown in the accompanying drawings, preferred embodiments of my invention, yet it is to be understood that the same are susceptible of modification and change without departing from the spirit of my invention.

Referring to the drawings, Fig, 1 is a Vertical sectional view of a coffee urn, Fig. 2 is an enlarged detailed sectional View of my mixing device, Fig. 8 is a bottom plan view of the bowl showing the perforations, Fig. 4 is a bottom plan view of a modiication of Fig. 3, Fig. 5 is a detailed sectional View showing a modification of the openings and Fig. 6 is a. plan View of the disclosure shown in Fig. 5, Fig. '7 is a bottom plan View of an embodiment showing grooves between the openings and Fig, 8 is a side elevational View of the same, partly in section.

An embodiment selected to illustrate my invention as shown in Fig. 2, comprises a receptacle I0, the upper edge I I, of which is supported on a support I2. A vessel I3, preferably extending within receptacle I0, and preferably spaced high aboveA the bottom of receptacle I0, has an upper edge I4 supported on the top of upper edge II of receptacle I0.

My vessel I 3 is preferably concave and has opening I5 at its central bottom portion. Spaced from opening I5 are a pair of open-ings I6 ata higher portion of the upward curve of vessel I3. Also spaced from openings I6 and at a substantially equally higher portion of the upward curve of vessel I3 are four openings I'I. The openings, I5, I6 and I'I are all preferably of the same size.

In another embodiment illustrating my invention as shown in Fig. 4, I have shown a plurality of openings I5, at the central bottom portion. For illustration I have shown three openings I5 although the number could be varied without departing from the spirit Yof my invention. `I have also shown in this embodiment six openings I6, at a higher portion of vessel I3, and twelve openings I'I at a substantially equally higher portion of vessel I3, ,The number of openings I6 and I'I of the same size as openings I5 would be increased in the same ratio if there were more than three openings I5. The ratio between openings I5, I6, and I'I is therefore, substantially 1 to 2 to 4.

It is also within the contemplation of my invention that I may use one or more openings I5, I6 and I'I provided the opening or openings I6 permit the passing through of substantially twice as much liquid as the opening or openings I5 and provided the opening or openings I'I `permit the passing through of substantially four times as much liquid as opening or openings I5.

Although my device may Sbe used to mix any liquid, yet it is particularly efcacious with coffee. In the .brewing of coffee, the first portion of the liquid received from the coffee maker I8 will be extremely strong; the next portion semi-strong and the latter portion very weak. As the strong liquid is received in the vessel I3, it flows to the bottom wherein is located the opening or openings I5, which must be of such a size or number as to allow the liquid to be expelled at a slower rate than it is received. This permits the liquid to accumulate so that as the semi-strong or medium liquid xis received in the Vessel I3, it will reach the openings I 5, which are of suicient size or number to allow the semi-strong liquid to pass at a rate slightly slower than it is received in the vessel I3. In a similar manner the weak liquid will reach and pass through openings Il. In operation substantially one drop or portion of strong liquid will pass through opening I5, two drops or portions of semi-strong liquid will pass through opening I6 and four drops of the weak liquid will pass through openings II, simultaneously so that they may be automatically mixed as they are received in the receptacle to obtain a liquid substantially uniform in strength.

The liquid from the coffee maker i8, is reguy lated so that vessel I3 is promptly filled with liquid just short of exit overflow I9. When this point has been reached my device is operating with the liquid passing through openings I5, I6 and I'I at its maximum efliciency as a mixer.

The coffee urn 20, as shown in Fig. 1 has a. boiler portion 2| adapted to receive and heat 3 water. This hot water is connected to a spray 22 so that the hot water is sprayed into coee maker I8. The hot water passes through the ground coiee 'in coffee maker I8 and passes into vessel I3, then into receptacle I from which it is withdrawn by faucet 23.

I may provide openings I6 and I1 so connected by grooves 24 with each other and opening or openings I as to direct liquid passing therethrough along the grooves to opening or openings I5, see Figs. 7 and 8. This will further expedite the mixing as the liquid will then tend to mix to some extent even before reaching the receptacle III.

I have provided that vessel I3 be spaced high above the bottom of receptacle I0, so that the liquid may splash and have force to create turbulence for further mixing action.

In Figs. 5 and 6 the openings I5, I6 and I'I are curved and the outsides of the bowl adjacent the openings yhas recesses 25 to prevent any capillary attraction and form drops coming from openings I5, I6, and I'I to fall directly to receptacle I0,

Having thus described my invention, I claim:

In a device for making coiee of uniform strength having an urn, a coiee maker attached to the upper portion of said urn, said coffee maker adapted to hold ground coffee, means for pouring hot water into said ground coffee in said coffee maker, said coffee maker adapted to permit the coffee so made to drop therefrom, and a receptacle attached to said urn, a vessel supported below and in communication with the coffee maker and above the receptacle, said vessel having a bowl shaped body portion with upwardly diverging sides, said bowl having an opening at the bottom of said bowl, said bowl having substantially twice as many intermediate openings at a higher and wider portion as it hasin its bottom, and said bowl having substantially twice as many highest openings at an equally higher and wider portion as it has intermediate openings, said opening at the bottom of the bowl being of such a small size that the strongest coffee rst received in the bowl passes out of said opening at a slower rate than received, thus causing an accumulation of weaker coffee up to the intermediate openings, said intermediate openings being of such a size that the coiee at that level passes out of said intermediate openings at a slower rate than received, thus causing an accumulation of still weaker coiee up to the highest openings, said openings thereby permitting coffee of Varying strengths and weaknesses to fall therethrough into said receptacle and mix in said receptacle with coiee of more uniform strength.

Y DARREL P. HAMLET.

REFERENCES CITED The following references are of record in the le of this patent:

UNITED STATES PATENTS Number Name Date 1,762,209 Aborn June 10, 1930 1,946,247 Wales Feb. 6, 1934 2,107,923 Adams Feb. 8, 1938 2,269,112 Jepson et al. Jan. 6, 1942 

